e71593d67e
platforms/tinyfpga_b: Move serial peripheral out of default I/O, make it
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optional via `add_extension`.
2018-02-27 18:41:35 -05:00
c5be6e26be
README: add section for newcomers
2018-02-23 14:37:10 +01:00
f372e8c880
README: cleanup
2018-02-23 14:15:41 +01:00
fb088b79dd
README: update, migen is no longer forked
2018-02-23 14:08:13 +01:00
1925ba176f
replace litex.gen imports with migen imports
2018-02-23 13:38:19 +01:00
43164b9a2c
remove migen fork from litex
2018-02-23 13:37:26 +01:00
212e1a7076
bump to 0.2.dev
2018-02-23 13:36:32 +01:00
64aa4ae4c0
uniformize with litex cores and make things more clear about what LiteX vs Migen/MiSoC
2018-02-22 11:52:10 +01:00
aaf097056a
Merge pull request #64 from q3k/q3k/axi4lite
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Preliminary AXI4Lite support: CSR bridge
2018-02-21 09:47:29 +01:00
688f26cc32
Change AXI interface and tidy code
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Inspired by parts of https://github.com/peteut/migen-misc/
2018-02-21 00:00:58 +00:00
512ed2b3d6
Preliminary AXI4Lite CSR bridge support
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This change introduces an AXI4Lite to CSR bridge. Hopefully it will
become extended in the future with full AXI support and more structures
(Wishbone bridge, interconnect, ...). For now this will do.
The bridge has been simulated (and includes an FHDL testbench) and
tested in hardware (on a Zynq 7020).
2018-02-20 21:27:51 +00:00
55fc9d2d6b
Merge pull request #60 from q3k/for-upstream/top-level-module-selection
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Top module selection (for Verilator and Diamond)
2018-02-19 12:27:25 +01:00
7b5bd4041a
Merge pull request #57 from rohitk-singh/master
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WIP - BIOS: Flashboot without main ram
2018-02-10 21:37:38 +01:00
c14502807e
board/targets/nexys4ddr: use MT47H64M16
2018-02-06 19:17:54 +01:00
95ebba428c
boards/platforms/nexys4ddr: add user_sw, user_btn, fix ddr3
2018-02-06 19:08:46 +01:00
ee4fa597b4
boards: add nexys4ddr
2018-02-06 14:43:20 +01:00
2ecd1b0666
Merge pull request #61 from PaulSchulz/master
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platform/arty.py: Move Pmod definitions to 'connectors' section.
2018-01-26 01:58:37 +01:00
c83ae98be3
Merge pull request #63 from cr1901/arty_s7
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boards/platforms: Add Arty S7 Board.
2018-01-26 01:57:50 +01:00
4607e5323f
boards/platforms: Add Arty S7 Board.
2018-01-25 18:36:32 -05:00
0ac35300c4
Merge branch 'master' of https://github.com/enjoy-digital/litex into upstream
2018-01-24 13:32:42 +10:30
4f2725809e
software/common: revert PYTHON to python3 (since breaking things)
2018-01-23 10:39:13 +01:00
4e168221d8
bios: fix riscv processor print
2018-01-23 10:33:05 +01:00
d448874879
sim: rename top module to dut and use --top-module parameter (needed for picorv32 simulation)
2018-01-23 10:28:16 +01:00
3ac28ed6f7
platform/arty.py: Move Pmod definitions to 'connectors' section.
2018-01-23 16:11:25 +10:30
ef511e7edc
Specify top-level module in Lattice Diemond build script.
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When building multi-source files the toolchain gets confused as to which
module is top-level. This ensures that the build_name of the design is
selected.
2018-01-23 01:17:04 +00:00
ef6c517dad
Build top module as 'dut' in Verilator and set it as top-level.
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When building a design with PicoRV32 we end up with multiple top-level
modules and Verilator becomes confused as to which is the right one.
This change ensures the dut.v generated by the sim build process has
it's top-level name set to 'dut' and that verilator is invoked with this
name.
2018-01-23 01:15:28 +00:00
a385143779
Merge pull request #59 from q3k/for-upstream/multiple-synthesis-directives
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Allow for multiple synthesis directives in specials.
2018-01-23 01:43:23 +01:00
21bd26dcdd
Allow for multiple synthesis directives in specials.
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This is needed to specify timing constraints on some Lattice Diamond
library specials, like the EHXPLLL.
To keep backwards compatibility we allow the directive to still be a
single string. If it's not, we assume it's an iterable.
2018-01-23 00:27:49 +00:00
67f8718b26
minor cleanup
2018-01-23 00:35:20 +01:00
d07ddd11d9
Merge pull request #58 from q3k/for-upstream/picorv32-support
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Implement IRQ for PicoRV32 on LiteX
2018-01-22 22:09:46 +01:00
6daf3eabc5
Implement IRQ software support for RISC-V.
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Well, at least PicoRV32-specific. Turns out there is no RISC-V
specification for simple microcontroller-like interrupts, so PicoRV32
implements its' own based on custom opcodes.
It's somewhat esoteric, and for example doesn't offer a global interrupt
enable/disable. For this we implement a thin wrapper in assembly and
then expose it via a few helpers in irq.h.
2018-01-22 18:50:26 +00:00
2108c97b9b
Import PicoRV32-specific instruction macros.
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These come from the PicoRV32 repo and are released under the public
domain [1].
[1] - 70f3c33ac8/firmware/custom_ops.S
2018-01-22 18:50:26 +00:00
cf74c781f4
Write init files that respect CPU's endianness.
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This is required for PicoRV32 support. We also drive-by enable
explicit specification of run= in Builder.build() by callers.
2018-01-22 18:50:26 +00:00
7176492231
Set the MABI and MArch of the riscv target.
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Again, this should be tunable, and synchronized with the core settings.
2018-01-22 18:50:26 +00:00
7ea5a26734
Enable hardware multiplier and divider in PicoRV32
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This should become tunable later once we can configure whether we link
in the soft mul library or not.
2018-01-22 18:50:26 +00:00
75e230aae7
Replace __riscv__ macros with __riscv.
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The __riscv__ form is deprecated [1].
[1] - https://github.com/riscv/riscv-toolchain-conventions#cc-preprocessor-definitions
2018-01-22 18:50:26 +00:00
20ed23443b
Export trap signal from PicoRV32.
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This is useful for handling crashes from hardware.
2018-01-22 18:50:26 +00:00
b0be563012
Bump PicoRV32 version.
2018-01-22 18:50:26 +00:00
75e7f9505a
BIOS: Flashboot without main ram
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Modified flashboot() to skip copy to main ram if there is no main
ram, and instead execute in place out of SPI flash. (For this to
work the linker .ld will also need to redirect references to be
inside the SPI flash mapping.)
2018-01-20 15:05:47 +11:00
3a5f93db5d
software/bios: add litex logo
2018-01-19 18:41:13 +01:00
d6877300c2
Merge pull request #56 from cr1901/mimasv2
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Add mimasv2 platform (pulled from litex-buildenv).
2018-01-19 17:59:47 +01:00
c553fe2bf3
Add mimasv2 platform (pulled from litex-buildenv).
2018-01-19 06:16:04 -05:00
d6f2f63794
Merge pull request #53 from mithro/allow-forcing-colorama
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Support forcing colorama colors on.
2018-01-18 16:33:02 +11:00
ead88ed66d
Support forcing colorama colors on.
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This is needed if you want colors but are using pipes and similar.
2018-01-18 14:41:45 +11:00
fcc22350fb
Merge pull request #52 from ewen-naos-nz/tftp-alt-port
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BIOS: Support alternate TFTP server port
2018-01-18 13:40:28 +11:00
5ce8ca8e9b
BIOS: TFTP: try UDP/69 if specified port fails
2018-01-18 13:10:28 +11:00
cb31266500
BIOS: set TFTP_SERVER_PORT from enviroment
2018-01-18 13:09:34 +11:00
97f381baa6
BIOS: allow BIOS to specify TFTP server port
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Swaps hard coded PORT_OUT in tftp.c for parameter on the tftp_get()
and tftp_put() functions. Allow TFTP_SERVER_PORT used by BIOS to be
set at compile time from compiler defines.
2018-01-18 12:03:35 +11:00
e06bb3724b
Merge pull request #51 from felixheld/liteeth-untangling
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Include the ethernet related header files conditionally
2018-01-16 21:37:24 +01:00
21ad435def
Include the ethernet related header files conditionally
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Only including those header files in the litex firmware is the first step to
move the firmware parts of liteeth to the liteeth tree.
2018-01-16 14:33:49 +11:00
William D. Jones
Florent Kermarrec
Sergiusz Bazanski
Paul Schulz
Ewen McNeill
Tim Ansell
Felix Held